Research on GNSS System Single Interference Direction Finding

Abstract

This paper researched the performance of the Capon beamformer and MUSIC algorithm using to estimate the direction of single narrow-band interference. The simulation was performed in the BDS (BeiDou Navigation Satellite System) B3 band (1268.52±10.23MHz) with four-element rectangular and linear antenna arrays. The simulation results show that the dimension of the interference direction-finding is related to the antenna array. The linear array can only estimate the elevation angle. The rectangular array can simultaneously estimate the elevation angle and azimuth. Under ideal conditions, the accuracy of both algorithms is better than 2.